Linked Life Data

10064126

Source:http://linkedlifedata.com/resource/pubmed/id/10064126

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1999-5-4
pubmed:abstractText
We have studied the clinical usefulness of urinary bone resorption markers in postmenopausal women with symptomatic osteoporosis. The study design is a randomised double-blind placebo controlled study, in which the subjects were daily treated for 24 months either with a hormone analogue (2.5 mg Livial, generic name Tibolone, Organon, Amsterdam, Holland) plus 800 mg calcium (n = 14, age 63+/-5 years, range 52-68 years), or with placebo plus 800 mg calcium (n = 19, age 66+/-7 years, range 50-75 years). The laboratory methods for urinary bone resorption markers were enzyme immunoassays (EIA) for urinary pyridoline (PYD) and deoxypyridoline crosslinks (DPD), and for cross-linked N-telopeptides of Type I Collagen (NTx), and an HPLC assay for urinary hydroxyproline (HOP). All the urine assay results were calculated per mmol creatinine. All the resorption markers decreased during the two-year study period in both groups. The Z scores (discriminating power, i.e. ability of the different tests to distinguish the hormone treated subjects from the placebo treated subjects) for HOP and PYD were rather low: 0.06-1.52 for HOP and 0.68-1.47 for PYD. The differences between the two treatment groups were statistically significant for DPD at 12 and 24 months of treatment (P = 0.0471 and P = 0.0466, respectively), the Z scores ranging 0.45-1.90. NTx showed the most prominent decrease from the beginning of the study especially in the hormone treatment group: the differences between the two treatment groups were statistically highly significant for NTx already at 6 months of treatment (P = 0.0015), and the Z scores remained high ranging 2.11-3.82 throughout the two-year study period. Dual X-ray absorptiometry (DXA) of the lumbar spine and femoral neck did not show statistically significant differences between the two treatment groups throughout the two-year study period. After 2 years there was, however, a significant increase in bone density both in the spine (+ 6.6%, P = 0.0002) and in the femoral neck (+ 3.4%, P = 0.0389) in the women with hormone treatment. In the control group a significant increase (+ 5.1%, P = 0.0012) in the spine, whereas a non-significant decrease (-1.5%, n.s.) in the femoral neck was observed. We suggest that measurement of urinary cross-linked peptides derived from Type I collagen (NTx and DPD) might be a useful biochemical method of observing the positive clinical effect (i.e. reduction in bone resorption) following hormone replacement therapy in postmenopausal fracture patients.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0009-8981
pubmed:author
pubmed:issnType
Print
pubmed:volume
279
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
145-54
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Urinary bone resorption markers in monitoring treatment of symptomatic osteoporosis.
pubmed:affiliation
Department of Clinical Chemistry, Kuopio University Hospital, Finland. markku.parviainen@finhost.fi
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Research Support, Non-U.S. Gov't